WO1994016977A1 - Device for pneumatic transportation of all bulk products - Google Patents

Device for pneumatic transportation of all bulk products Download PDF

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Publication number
WO1994016977A1
WO1994016977A1 PCT/FR1994/000069 FR9400069W WO9416977A1 WO 1994016977 A1 WO1994016977 A1 WO 1994016977A1 FR 9400069 W FR9400069 W FR 9400069W WO 9416977 A1 WO9416977 A1 WO 9416977A1
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WO
WIPO (PCT)
Prior art keywords
products
cyclone
suction
transport device
airlock
Prior art date
Application number
PCT/FR1994/000069
Other languages
French (fr)
Inventor
Pierre Martenet
Original Assignee
Société De Filtration Traitement Séchage Et Toutes Applications - F.T.S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Société De Filtration Traitement Séchage Et Toutes Applications - F.T.S.A. filed Critical Société De Filtration Traitement Séchage Et Toutes Applications - F.T.S.A.
Priority to AU58875/94A priority Critical patent/AU5887594A/en
Publication of WO1994016977A1 publication Critical patent/WO1994016977A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/60—Devices for separating the materials from propellant gas

Definitions

  • Pneumatic transport device for all bulk products.
  • the invention relates to the technical field of pneumatic transport of bulk products and relates more precisely to a device for conveying and evacuating products to be thrown away such as litter, waste, cardboard boxes, coins, etc.
  • the Applicant has developed a device which is suitable for the bulk transport of all products, whether heavy, light or volatile, which also makes access to its products much easier. mechanisms therefore their maintenance and cleaning, and which has the additional advantage of being much quieter than tranfer facilities' known.
  • a main object of the present invention therefore consists of a pneumatic transport device for bulk products displaced by suction between a supply zone and a collection zone, device according to which the supply line for the mixture of air and products opens at the periphery of at least one cyclone, the cylindrical lower part of which communicates with an airlock for collecting products and the central upper part of which is connected to a suction fan by means of a switch tube located at inside a junction box and capable of connecting to the suction side or the discharge side of said fan.
  • the base of the airlock is closed by a single or double door in series, having at least one automatic closing means, which is a control mechanism or - more simply - a counterweight.
  • a removable grid with drawer is interposed on the cyclone connection pipe to the junction box.
  • a second cyclone is mounted in an intermediate position on the connection duct between the first cyclone and the removable grid, with the interposition of a separation chamber, allowing total separation of products / transfer air by forced centrifugation.
  • FIG. I a schematic sectional view of the device in the position of suction in FIG. 2, the same view of the device in the discharge position in FIG. 3, an alternative embodiment of FIG. 1.
  • FIG. 1 a first embodiment in which the suction of air and the products it entrains from a supply area, is done in an inlet pipe 1, under the action of a suction fan 2.
  • the pipe 1 opens at the periphery of a cyclone 3, consisting of a flat cylindrical enclosure with a single scroll open at its lower part and in direct communication with an airlock 4 which constitutes the product collection area.
  • the base of the airlock is closed by a door or a shutter valve 5 capable of pivoting freely around the axis 6, or under the action of a control mechanism 7.
  • the control mechanism could be a simple counterweight system and the door or valve can be simple or can be a double door in series for operation without interruption of the suction. In both cases these mechanisms constitute automatic closing means.
  • Cyclone 3 at its upper part, has a central opening 8 which receives a connection duct 9 to a junction box 10.
  • a removable grid with drawer 11 as well as possibly a separation chamber 17 are interposed on said duct 9.
  • the latter comes into the housing 10 in the extension of a tube section 12 which constitutes a switching tube and which is located inside the housing 10, which tube being pivoted on a joint 13 disposed at its base. In the position shown in Figure 1, the tube 12 is vertical and directly communicates the connection duct with the suction side of the fan 2.
  • the discharge side of said fan communicates with the housing 10 through an orifice 15; finally the housing 10 has an opening 14 for
  • This embodiment of a transport device with a single cyclone operates as follows.
  • the fan 2 creates by the tube 12 and the connection duct 9 a suction, illustrated by the arrows, in the center of the cyclone 3 and therefore in the inlet pipe 1.
  • This pipe which can be of great length, routes therefore towards the cyclone a mixture of air and products which can be of various dimensions, configurations and weights.
  • the suction established continuously in the center of the cyclone puts a slight depression in the lower airlock 4, which can keep the door 5 closed, in addition to the mechanism 7.
  • the products arriving in the cyclone 3 are, in a manner known per se, centrifuged .
  • the heaviest products then fall into the airlock while the lightest products (for example papers) rather located towards the center of the cyclone will be sucked into the connection duct 9 and blocked by the grid 11.
  • This suction process is carried out continuously for a few minutes.
  • FIG. 3 illustrates an alternative embodiment in which the same constituents have the same references.
  • This variant differs from that of FIG. 1 only in that it has a second cyclone 16 mounted in an intermediate position on the connection pipe 9, and a separation chamber 17 between the first cyclone and the removable grid 11, which amounts to creating a second volute in addition to the first volute of the first cylone.
  • the second cyclone and the separation 17 make it possible to refine the separation of air and products and in particular light or very light products.
  • the suction operation in FIG. 3 is done as in the example in FIG. 1, with an increase in efficiency due to the second cyclone and to the separation chamber.
  • the short delivery phase is also carried out in an analogous manner by tilting the tube 12 as explained with reference to FIG. 2.

Abstract

An inlet duct for the mixture of air and products leads to the periphery of a cyclone (3) whose lower cylindrical part communicates with a lock chamber (4) collecting the products, and the upper central part of a separation chamber is connected to a suction fan (2) through an orientation tube (12) arranged inside a shunting box (10) and connectable to the suction side or to the delivery side of said fan. Application to the transportation of products to be discarded.

Description

Dispositif de transport pneumatique de tous produits en vrac .Pneumatic transport device for all bulk products.
L'invention se situe dans le domaine technique du transport pneumatique de produits en vrac et concerne plus précisément un dispositif d'acheminement et d'évacuation de produits à jeter tels que détritus, déchets, cartons, pièces de monnaie etc...The invention relates to the technical field of pneumatic transport of bulk products and relates more precisely to a device for conveying and evacuating products to be thrown away such as litter, waste, cardboard boxes, coins, etc.
Dans ce domaine d'application particulière, notamment quand il s'agit d'évacuer hors d'un local des produits alimentaires ou des déchets tels que viandes, os, peaux, plumes etc... ou des fragments d'emballage en carton ou en matières plastiques ou encore tous produits tels que pièces de monnaie ou matériaux divers, il faut utiliser des systèmes à entretien facile, car il est nécessaire de procéder régulièrement au nettoyage de l'installation, par exemple chaque jour après l'arrêt du dispositif de transport .In this particular field of application, especially when it comes to evacuating from a room food products or waste such as meat, bones, skins, feathers etc ... or fragments of cardboard packaging or made of plastic or any other product such as coins or various materials, easy-to-maintain systems must be used, since it is necessary to regularly clean the installation, for example every day after the device transport.
Les tapis d'évacuation de déchets utilisés à ce jour ne répondent pas aux critères d'hygiène particulièrement dans leur utilisation en boucherie, car il est impossible de laver correctement et facilement les innombrables pièces mécaniques qui composent ce type de transporteur .The waste disposal mats used to date do not meet the hygiene criteria, particularly in their use in butchers, because it is impossible to wash correctly and easily the countless mechanical parts that make up this type of transporter.
On a pensé alors au transport pneumatique du type dit "à canon" mais on se heurte ici à des problèmes de puissance trop importante à fournir dès que la longueur des tubes utilisés augmente. Il existe également d'autres systèmes de transfert de produits de matières pulvérulentes ou de denrées alimentaires qui mettent en oeuvre une aspiration de la matière et son déplacement dans un conduit entre un poste de déchargement et un poste de recueil. Ainsi pour déplacer la matière entre une zone amont et une zone aval, il est habituel d'utiliser une pompe d'aspiration et des moyens de séparation, par exemple une chambre de dépression, qui oriente les matières vers le conduit d'évacuation en direction de la zone aval. Du côté amont la matière stockée dans une trémie d'alimentation est aspirée dans le conduit pneumatique et du côté aval elle est recueillie dans un réceptacle. Tous ces systèmes nécessitent la mise en oeuvre de nombreuses vannes qui compliquent l'installation et sont autant de mécanismes supplémentaires soumis aux exigences d'entretien et de nettoyage.We then thought of pneumatic transport of the so-called "cannon" type, but here we run into problems of too great a power to be supplied as soon as the length of the tubes used increases. There are also other systems for transferring products of pulverulent materials or of foodstuffs which use a suction of the material and its movement in a conduit between an unloading station and a collection station. So to move the material between an upstream area and a downstream area, it is usual to use a suction pump and separation means, for example a vacuum chamber, which directs the materials towards the evacuation duct in the direction of the downstream area. On the upstream side the material stored in a feed hopper is drawn into the pneumatic conduit and on the downstream side it is collected in a receptacle. All these systems require the implementation of numerous valves which complicate the installation and are all additional mechanisms subject to maintenance and cleaning requirements.
Dans un souci de simplification et d'efficacité, la Demanderesse a mis au point un dispositif qui se prête au transport en vrac de tous produits, qu'ils soient lourds, légers ou volatils, qui rend aussi beaucoup plus aisé l'accès de ses mécanismes en vue par conséquent de leur entretien et de leur nettoyage, et qui présente l'avantage complémentaire d'être beaucoup plus silencieux que les installations de tranfert 'connues .In the interest of simplification and efficiency, the Applicant has developed a device which is suitable for the bulk transport of all products, whether heavy, light or volatile, which also makes access to its products much easier. mechanisms therefore their maintenance and cleaning, and which has the additional advantage of being much quieter than tranfer facilities' known.
Un objet principal de la présente invention consiste donc en un dispositif de transport pneumatique de produits en vrac déplacés par aspiration entre une zone d'alimentation et une zone de recueil, dispositif selon lequel la canalisation d'arrivée du mélange d'air et de produits débouche à la périphérie d'au moins un cyclone dont la partie inférieure cylindrique communique avec un sas de recueil des produits et dont la partie supérieure centrale est reliée à un ventilateur d'aspiration par l'intermédiaire d'un tube d'aiguillage localisé à l'intérieur d'un boitier de dérivation et susceptible de se raccorder au côté aspiration ou au côté refoulement dudit ventilateur.A main object of the present invention therefore consists of a pneumatic transport device for bulk products displaced by suction between a supply zone and a collection zone, device according to which the supply line for the mixture of air and products opens at the periphery of at least one cyclone, the cylindrical lower part of which communicates with an airlock for collecting products and the central upper part of which is connected to a suction fan by means of a switch tube located at inside a junction box and capable of connecting to the suction side or the discharge side of said fan.
La base du sas est fermée par une porte simple ou double en série, disposant d'au moins un moyen de fermeture automatique, qui est un mécanisme de commande ou -plus simplement- un contre-poids .The base of the airlock is closed by a single or double door in series, having at least one automatic closing means, which is a control mechanism or - more simply - a counterweight.
De plus une grille amovible à tiroir est intercalée sur le conduit de raccordement du cyclone au boîtier de dérivation.In addition, a removable grid with drawer is interposed on the cyclone connection pipe to the junction box.
Selon une autre caractéristique particulière de l'invention, un second cyclone est monté en position intermédiaire sur le conduit de raccordement entre le premier cyclone et la grille amovible, avec interposition d'une chambre de séparation, permettant une séparation totale produits/air de transfert par centrifugation forcée.According to another particular characteristic of the invention, a second cyclone is mounted in an intermediate position on the connection duct between the first cyclone and the removable grid, with the interposition of a separation chamber, allowing total separation of products / transfer air by forced centrifugation.
D'autres caractéristiques et avantages de l'invention ressortiront de la lecture des exemples non limitatifs de réalisation décrits ci-après dans lesquels il est fait référence aux dessins annexés qui représentent : figure i, une vue schématique en coupe du dispositif en position d'aspiration figure 2, la même vue du dispositif en position de refoulement figure 3, une variante de réalisation de la figure 1.Other characteristics and advantages of the invention will emerge from reading the nonlimiting exemplary embodiments described below in which reference is made to the appended drawings which represent: FIG. I, a schematic sectional view of the device in the position of suction in FIG. 2, the same view of the device in the discharge position in FIG. 3, an alternative embodiment of FIG. 1.
On a représenté à la figure 1 un premier exemple de réalisation dans lequel l'aspiration de l'air et des produits qu'il entraine en provenance d'une zone d'alimentation, se fait dans une canalisation d'arrivée 1, sous l'action d'un ventilateur d'aspiration 2. La canalisation 1 débouche à la périphérie d'un cyclone 3, constitué d'une enceinte cylindrique plate à simple volute ouverte à sa partie inférieure et en communication directe avec un sas 4 qui constitue la zone de recueil des produits .There is shown in Figure 1 a first embodiment in which the suction of air and the products it entrains from a supply area, is done in an inlet pipe 1, under the action of a suction fan 2. The pipe 1 opens at the periphery of a cyclone 3, consisting of a flat cylindrical enclosure with a single scroll open at its lower part and in direct communication with an airlock 4 which constitutes the product collection area.
La base du sas est fermée par une porte ou un clapet d'obturation 5 susceptible de pivoter-librement autour de l'axe 6, -ou sous l'action d'un mécanisme de commande 7. En variante le mécanisme de commande pourrait être un simple système de contre-poids et la porte ou clapet peut être simple ou peut être une double porte en série pour un fonctionnement sans interruption de l'aspiration. Dans les deux cas ces mécanismes constituent des moyens de fermeture automatique. Le cyclone 3, à sa partie supérieure, comporte une ouverture centrale 8 qui reçoit un conduit de raccordement 9 à un boitier de dérivation 10. Une grille amovible à tiroir 11 ainsi éventuellement qu'une chambre de séparation 17 sont intercalées sur ledit conduit 9. Ce dernier vient dans le boitier 10 dans le prolongement d'une section de tube 12 qui constitue un tube d'aiguillage et qui est localisé à l'intérieur du boîtier 10, lequel tube étant pivotant sur une articulation 13 disposée à sa base. Dans la position représentée à la figure 1, le tube 12 est vertical et fait communiquer directement le conduit de raccordement avec le côté aspiration du ventilateur 2. Le côté refoulement dudit ventilateur communique avec le boîtier 10 par un orifice 15 ; enfin le boîtier 10 dispose d'une ouverture 14 de mise à l'air libre.The base of the airlock is closed by a door or a shutter valve 5 capable of pivoting freely around the axis 6, or under the action of a control mechanism 7. As a variant, the control mechanism could be a simple counterweight system and the door or valve can be simple or can be a double door in series for operation without interruption of the suction. In both cases these mechanisms constitute automatic closing means. Cyclone 3, at its upper part, has a central opening 8 which receives a connection duct 9 to a junction box 10. A removable grid with drawer 11 as well as possibly a separation chamber 17 are interposed on said duct 9. The latter comes into the housing 10 in the extension of a tube section 12 which constitutes a switching tube and which is located inside the housing 10, which tube being pivoted on a joint 13 disposed at its base. In the position shown in Figure 1, the tube 12 is vertical and directly communicates the connection duct with the suction side of the fan 2. The discharge side of said fan communicates with the housing 10 through an orifice 15; finally the housing 10 has an opening 14 for venting.
Cet exemple de réalisation d'un dispositif de transport à un seul cyclone fonctionne de la façon suivante. Le ventilateur 2 crée par le tube 12 et le conduit de raccordement 9 une aspiration, illustrée par les flèches, dans le centre du cyclone 3 et par conséquent dans la canalisation d'arrivée 1. Cette canalisation, qui peut être de grande longueur, achemine donc vers le cyclone un mélange d'air et de produits qui peuvent être de dimensions, de configurations et de poids divers. L'aspiration établie en continu au centre du cyclone met en légère dépression le sas inférieur 4, ce qui peut maintenir la porte 5 fermée, en complément du mécanisme 7. Les produits arrivant dans le cyclone 3 sont, de façon connue en soi, centrifugés. Les produits les plus lourds tombent alors dans le sas tandis que les produits les plus légers (par exemple les papiers) plutôt localisés vers le centre du cyclone seront aspirés dans le conduit de raccordement 9 et bloqués par la grille 11. Ce processus d'aspiration s'effectue en continu pendant quelques minutes.This embodiment of a transport device with a single cyclone operates as follows. The fan 2 creates by the tube 12 and the connection duct 9 a suction, illustrated by the arrows, in the center of the cyclone 3 and therefore in the inlet pipe 1. This pipe, which can be of great length, routes therefore towards the cyclone a mixture of air and products which can be of various dimensions, configurations and weights. The suction established continuously in the center of the cyclone puts a slight depression in the lower airlock 4, which can keep the door 5 closed, in addition to the mechanism 7. The products arriving in the cyclone 3 are, in a manner known per se, centrifuged . The heaviest products then fall into the airlock while the lightest products (for example papers) rather located towards the center of the cyclone will be sucked into the connection duct 9 and blocked by the grid 11. This suction process is carried out continuously for a few minutes.
Sans arrêter le fonctionnement du ventilateur 2, on assure le basculement du tube 12 qui met en communication le conduit de raccordement 9 avec l'orifice 15 du côté du refoulement du ventilateur, comme l'illustre la figure 2. Le ventilateur aspire de l'air cette fois par l'ouverture 14 et le renvoie par le tube 12 en sens inverse, en direction du cyclone 3. Cette action provoque, d'une part le refoulement des produits légers bloqués dans la grille 11 et leur projection vers le bas comme le montrent les flèches et d'autre part l'ouverture de la porte 5 à l'encontre de la force de rappel exercée par le mécanisme 7. Les produits contenus dans le sas 4 sont alors évacués vers un réceptacle de recueil non représenté. On a ainsi, en un court instant, assuré le vidage du sas et le nettoyage de la grille . Le fait que celle-ci soit amovible présente l'avantage supplémentaire de faciliter son extraction en vue d'un nettoyage particuler ou de son échange standard. On notera qu'une telle disposition évite l'emploi d'une vanne de fermeture. En outre le caisson 10 fait office de silencieux. Pendant cette courte phase d'inversion de l'aspiration normale du dispositif, il y a évidemment interruption de l'admission des produits se trouvant dans la canalisation 1, mais cette interruption est momentanée et sans incidence sur le fonctionnement de l'installation. On revient ensuite à une phase normale d'aspiration (cas de la figure 1) après avoir fait revenir le tube pivotant dans sa première position.Without stopping the operation of fan 2, it ensures the tilting of the tube 12 which communicates the connection conduit 9 with the orifice 15 on the discharge side of the fan, as illustrated in Figure 2. The fan sucks air this time through the opening 14 and returns it by the tube 12 in the opposite direction, in the direction of the cyclone 3. This action causes, on the one hand the backflow of the light products blocked in the grid 11 and their projection downwards as shown by the arrows and other apart from the opening of the door 5 against the return force exerted by the mechanism 7. The products contained in the airlock 4 are then evacuated to a collection receptacle, not shown. We thus, in a short instant, ensured the emptying of the airlock and the cleaning of the grid. The fact that it is removable has the additional advantage of facilitating its extraction for a particular cleaning or standard exchange. It will be noted that such an arrangement avoids the use of a closing valve. In addition, the box 10 acts as a silencer. During this short phase of reversing the normal aspiration of the device, there is obviously an interruption in the admission of the products being in line 1, but this interruption is momentary and has no effect on the operation of the installation. We then return to a normal suction phase (case of Figure 1) after returning the swivel tube to its first position.
La figure 3 illustre une variante de réalisation dans laquelle les mêmes constituants portent les mêmes références. Cette variante, ne diffère de celle de la figure 1 que par le fait qu'elle dispose d'un second cyclone 16 monté en position intermédiaire sur le conduit de raccordement 9, et d'une chambre de séparation 17 entre le premier cyclone et la grille amovible 11, ce qui revient à créer une seconde volute en plus de la première volute du premier cylone . Le second cyclone et la chambre de séparation 17 permettent d'affiner la séparation de l'air et des produits et notamment des produits légers ou très légers. Le fonctionnement en aspiration de la figure 3 se fait comme pour l'exemple de la figure 1, avec un accroissement d'efficacité dû au deuxième cyclone et à la chambre de séparation. On effectue également de façon analogue la courte phase de refoulement par basculement du tube 12 comme on l'a expliqué en référence à la figure 2. FIG. 3 illustrates an alternative embodiment in which the same constituents have the same references. This variant differs from that of FIG. 1 only in that it has a second cyclone 16 mounted in an intermediate position on the connection pipe 9, and a separation chamber 17 between the first cyclone and the removable grid 11, which amounts to creating a second volute in addition to the first volute of the first cylone. The second cyclone and the separation 17 make it possible to refine the separation of air and products and in particular light or very light products. The suction operation in FIG. 3 is done as in the example in FIG. 1, with an increase in efficiency due to the second cyclone and to the separation chamber. The short delivery phase is also carried out in an analogous manner by tilting the tube 12 as explained with reference to FIG. 2.

Claims

REVENDICATIONS 1. Dispositif de transport pneumatique de produits en vrac déplacés par aspiration entre une zone d'alimentation et une zone de recueil dans lequel la canalisation d'arrivée du mélange d'air et de produits débouche à la périphérie d'une enceinte cylindrique dont la partie inférieure est un sas de recueil des produits, caractérisé en ce que l'enceinte est un cyclone (3, 16) dont la partie supérieure centrale est reliée à un ventilateur d'aspiration (2) par l'intermédiaire d'un tube d'aiguillage (12) localisé à l'intérieur d'un boîtier de dérivation (10) et susceptible de se raccorder au côté aspiration ou au côté refoulement dudit ventilateur. CLAIMS 1. Device for pneumatically transporting bulk products displaced by suction between a supply zone and a collection zone in which the inlet pipe for the mixture of air and products opens out at the periphery of a cylindrical enclosure, the lower part is an airlock for collecting products, characterized in that the enclosure is a cyclone (3, 16), the upper central part of which is connected to a suction fan (2) by means of a tube switch (12) located inside a junction box (10) and capable of connecting to the suction side or the discharge side of said fan.
2. Dispositif de transport selon la revendication2. Transport device according to claim
1, caractérisé en ce que la base du sas (4) de recueil des produits est fermée par une double porte en série pour un fonctionnement sans interruption de l'aspiration.1, characterized in that the base of the airlock (4) for collecting the products is closed by a double door in series for operation without interrupting the suction.
3. Dispositif de transport selon la revendication 1, caractérisé en ce qu'un mécanisme de commande (7) assure la fermeture automatique d'une porte pivotante (5) fermant la base du sas (4) de recueil des produits.3. Transport device according to claim 1, characterized in that a control mechanism (7) ensures the automatic closing of a pivoting door (5) closing the base of the airlock (4) for collecting products.
4. Dispositif de transport selon la revendication 1, caractérisé en ce que une grille amovible à tiroir (11) est intercalée sur le conduit de raccordement (9) du cyclone (3, 16) au boîtier de dérivation (10) .4. Transport device according to claim 1, characterized in that a removable grid with drawer (11) is interposed on the connection duct (9) of the cyclone (3, 16) to the junction box (10).
5. Dispositif de transport selon la revendication 1, caractérisé en ce que le tube d'aiguillage (12) pivote sur une articulation (13) disposée à sa base. 5. Transport device according to claim 1, characterized in that the referral tube (12) pivots on a joint (13) disposed at its base.
6. Dispositif de transport selon la revendication6. Transport device according to claim
1, caractérisé en ce que le boîtier de dérivation (10) dispose d'une ouverture (14) de mise à l'air libre.1, characterized in that the junction box (10) has an opening (14) for venting.
7. Dispositif de transport selon la revendication 1, caractérisé en ce que un second cyclone (16) et une chambre de séparation (17) sont montés en position intermédiaire sur le conduit de raccordement (9), entre le premier cyclone (3) et la grille amovible (11) . 7. Transport device according to claim 1, characterized in that a second cyclone (16) and a separation chamber (17) are mounted in the intermediate position on the connection pipe (9), between the first cyclone (3) and the removable grid (11).
PCT/FR1994/000069 1993-01-21 1994-01-21 Device for pneumatic transportation of all bulk products WO1994016977A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU58875/94A AU5887594A (en) 1993-01-21 1994-01-21 Device for pneumatic transportation of all bulk products

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR93/00576 1993-01-21
FR9300576A FR2700528B1 (en) 1993-01-21 1993-01-21 Pneumatic transport device for all bulk products.

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WO1994016977A1 true WO1994016977A1 (en) 1994-08-04

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FR (1) FR2700528B1 (en)
WO (1) WO1994016977A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104058270A (en) * 2014-06-27 2014-09-24 冯政 Method for manufacturing and using draught fan type unloading machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2134378A1 (en) * 1971-04-24 1972-12-08 Zimmermann Maschbau Adolf
US3832005A (en) * 1972-05-24 1974-08-27 Universal Dynamics Corp Loader
GB2067499A (en) * 1979-12-15 1981-07-30 Engelbrecht & Lemmerbrock Pneumatic extraction apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2134378A1 (en) * 1971-04-24 1972-12-08 Zimmermann Maschbau Adolf
US3832005A (en) * 1972-05-24 1974-08-27 Universal Dynamics Corp Loader
GB2067499A (en) * 1979-12-15 1981-07-30 Engelbrecht & Lemmerbrock Pneumatic extraction apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104058270A (en) * 2014-06-27 2014-09-24 冯政 Method for manufacturing and using draught fan type unloading machine

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FR2700528B1 (en) 1995-04-14
AU5887594A (en) 1994-08-15
FR2700528A1 (en) 1994-07-22

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